[ARC5] Spoofing (Was ARC-18 / -28 ... "Radio Comm...)

[Kenneth G. Gordon]

On 25 Apr 2011 at 11:11, Nick England wrote:

> Speaking of bumps - I'm currently reading a book about Allied WW2
> deception operations. It mentions "spoof vans" which had airborne gear
> installed and would drive around airfield perimeters so that enemy DF
> would think a squadron was there instead of elsewhere. The
> transmitters were fitted with some vibration device to mimic the
> warble from actual aircraft operation. Fascinating, Captain - anyone
> ever heard of or seen such a thing?

Not too long ago, there was a very short article in Electric Radio Magazine 
concerning a British add-on to the BC-610 which enabled it to spoof a 
complete radio net. It had several "channels", all "about" on the same 
frequency, which, as the device cycled from one "channel" to the next, varied 
power, adjusted the "chirpiness" of the oscillator, raised and lowered power 
output, bias to the final, even filament voltage. It even changed bypassing to 
one of the channels so that the signal output had a bit of hum on it, all to 
"spoof" a complete radio net.

The author mentioned that he didn't have the complete device or its 
complete documentation, but couldn't see how they varied the position of the 
various stations, and that anyone who was good at DFing would easily 
determine that all 6 "stations" were in one place.

I wonder if this device was part of your "spoof vans"?

Ken W7EKB